Before I buy a 32gb SD card, is it possible to transfer apps to the SD card?

In the past the answer has been no, but there is little if any really good reason to put the apps on the SD Card, (unless you plan on 600 apps or so). The apps are small compared to the data. There is a app2sd app on the market that was originally intended for phones, like my Samsung, that have 2 SD Cards in the phone with both intended to be permanent. If you were to install an app to the SD Card and removed the card your TF would get pretty messed up.

The apps themselves (except some of the native ICS ones) are not of any major size that migrating them to the microSD or SD card has real value - mostly it's the data that can get to be substantial in size...especially photos, videos, and documents.

Enjoy your expanded storage....and make sure you get a brand name card with a Class 6 rating or higher if you intend to store video or large photo content (for access speed).